I currently live in Prague, and I'm really comfortable here, but if I had to choose another destination it would be one of the cleaner coastal (lakes are fine too ^^) cities.   Zurich – love Switzerland, prefer the german speaking parts, otherwise my 2nd choice would be Geneva Vancouver – close to the USA, nice climate, one of the cleanest cities with a beautiful landscape Livorno – coastal city in Italy, close to Tuscany, close to Milan and close to Rome, also...